With their thick, glossy manes these four women could so easily be in their 20s - from the back at least - but their real ages range from 45 to 54, proving that it's impossible to guess a woman's age from behind.

Emma Pope, 23, from Texas, weighed 315lbs (22 stone 7lbs) and was once told to get her 'fat ass off the court' during volleyball game - but she has since learned to laugh at the bullies who tormented her.